Valve Spring

Valve Spring Free Length 52.9 mm (2.08 inch)
Valve Spring Installed Height (Exhaust) 45.75 mm (1.8 inch)
Valve Spring Installed Height (Intake) 45.75 mm (1.8 inch)
Valve Spring Pressure (Closed) 340 N at 45.75 mm (76 lb. at 1.8 inch)
Valve Spring Pressure (Open) 980 N at 33.55 mm (220 lb. at 1.32 inch)